TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under
contract. The area surveyed is approximately 525 square miles and covers all of Island
County, WA and the Northeast portion of Jefferson County, WA. All data was collected
during ideal conditions (leaf-off). The LAS files were derived from all returns ASCII
files contain the X,Y,Z values of all the LiDAR returns collected during the survey
mission. The GPS time, scan angle and return numbers of each point were preserved
in the conversion from ASCII to LAS. The LAS files were classified into the following
ASPRS classes: (1) Unclassified (2) Bare Earth. Ground and water points are included
in Class 2 (Bare Earth). Futher details are available in the Process Steps below.
No ancillary data, such as intensity, is available for this data. Initially this dataset
was flown in 2001 with a 30% overlap between flight lines which did not meet specifications.
The dataset was reflown in 2002 with a 50% overlap between flight lines as the rest
of the PSLC data. The data is broken down into USGS quarter quads and then into 25
tiles within each quarter quad. Due to the overlap the nominal point spacing of the
dataset is 1.0 meter.